From owner-freebsd-current@FreeBSD.ORG Wed Sep 10 06:37:42 2014 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id AC43A6C0 for ; Wed, 10 Sep 2014 06:37:42 +0000 (UTC) Received: from cell.glebius.int.ru (glebius.int.ru [81.19.69.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "cell.glebius.int.ru", Issuer "cell.glebius.int.ru" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 2968EEEC for ; Wed, 10 Sep 2014 06:37:41 +0000 (UTC) Received: from cell.glebius.int.ru (localhost [127.0.0.1]) by cell.glebius.int.ru (8.14.9/8.14.9) with ESMTP id s8A6bbdY049217 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 10 Sep 2014 10:37:37 +0400 (MSK) (envelope-from glebius@FreeBSD.org) Received: (from glebius@localhost) by cell.glebius.int.ru (8.14.9/8.14.9/Submit) id s8A6bbkL049216; Wed, 10 Sep 2014 10:37:37 +0400 (MSK) (envelope-from glebius@FreeBSD.org) X-Authentication-Warning: cell.glebius.int.ru: glebius set sender to glebius@FreeBSD.org using -f Date: Wed, 10 Sep 2014 10:37:37 +0400 From: Gleb Smirnoff To: Luigi Rizzo Subject: Re: RFC: please put back spare fields in struct ifnet (removed in svn 270870) Message-ID: <20140910063737.GI17059@glebius.int.ru> References: <20140909103719.GB17059@glebius.int.ru> <20140909121708.GE17059@glebius.int.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Cc: George Neville-Neil , FreeBSD Current , Stefano Garzarella X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Sep 2014 06:37:42 -0000 Luigi, On Tue, Sep 09, 2014 at 07:59:42PM +0200, Luigi Rizzo wrote: L> My point is preserving support for out of tree modules, L> and spares (or spare accessors, or the ABI you mention below; L> something that gets you quickly a vendor specific pointer L> from an opaque ifnet) were useful for that. L> L> I think the removal of spares should have happened together L> with the commit of the new mechanism. If it is ready now, L> let's move with it and be done with this discussion. L> L> If not, I would like to bring back the pspares L> with a big note summarizing this discussion, L> and remove then when the new mechanism is ready. L> If i read correctly your comment below about L> the "properly named placeholder" you seem to be ok with that ? It would be absolutely okay if you commit right now a properly named placeholder for your new subsystem, that you work on right now. With the proper name no one will unintentionally hijack it. Would this be a satisfiable solution for you? The suggested ABI mechanism is still under discussion and development. -- Totus tuus, Glebius.